Reenforcing bar support for road paving and the like and process of road paving



NV.24, 1931 E.w. HALL-ETT 1,833,215

' REEN CING BAR SUPPORT FOR ROADV PAV AND E LIKE AND PROCESS OF ROAD PAVFiled April 4.. `19129 J "W" 'f Patented Nov. 24, 1931.

animen: WILBRT neuem', lor cnosnY'-, MINNESOTA y .REENFORCING "BARSUPPQRT `ron Y Appliatonmed April 4,

to hold the reenforcingbars in proper. spaced l relationffrom thesubgrade, so that the concrete formingthe maj o-r portion of thepavement may be properly poured about the reenforcing bars. Thesupportpins now commonly used are irremovably attached to the lingshovvninfull, lines in pone'- position and in (reeniorcing bars and theyare left ,embedded inthepavement after the concrete has beenv poured.These pinsjadd-considerably tothe cost of the, pavement, and` oftencause delay y in constructingthe pavement, inasmuch as a large quantityof the pins must bejat alltimes on hand for use and they must bedistributed alongl the line of 'wav of l.the pavement` forv ,usl-lVAlthough certain types of 7removable i reenforcing bar support pinshave been'heretol devised, foruse in road paving, `suchpins vcangenerally only beused Where-certain parts of the reenforcingstructurecanpalsobe removed. n* v n y It.is the object ofthe presentinvention, therefore, to provide novel and improved supports for thereenforcingbars used in con-r` crete paving and the like, which areadapted to hold the reenforcing bars in spaced relation above thesubgradevfor apavement or other surface to permit lconcreteto be poured.,about the reenforcing bars, `whereupon the supports may be vremovedforcfurther use. Q

It is another object of the present invention to provide a novel andimproved process for lconcrete road paving, whereby removabler-eenforcing bar supports may be utilized. To these ends, the inventionconsistsin the novel parts and `novel combinations of parts andgnovelprocesses and no'velstepsin the 1929. f serial' No; 352,438.

ROAD PAVING ANDTHE LIRE .lilvnrocussoF y ROADPAVING o.

processes, hereinafter Adefined inl thel claims,

and describedbin they following specification, made vin connectionwiththe accompanying drawings, wherein like reference characters referto theV same ory similar 'parts throughout the, various views. and,inwhich,

f Fig. `l is a" verticaltransverse`- section .l

Vthrough ,a Ifreshly poured concrete pavement, `wherein the reenforcingbar supports Aofthe present Vinvention are utilized;

Fig2 is. a plan view of a portion ofthe saidpavement; i i f Fig. 3 isvavertic'al V'section shown inan en- `larged scale and Fig25x Y, v o FigV4L is a verticalsection 1in an .enlarged scaleztaken on the lined-.A ofF ig. 2; Figfis :a plan view illustratingthe'central barsupport asshownin FigQS, the concrete .being removed and the Abar support be'- taken``on the* line 'of dottedlines inraposition that itlwillassume whenAbeing l removed l l.

Fig.. Gf'sa vert cal `sectio illustratingone typeofvside 'bar supportythat l scale taken on thelinelof Fig. 2, and

may be`usedthe support being yshown sinifull Y i lines in .one positionand being indicated dotted lines in.:k positionsthatit will assumeduring thef `removal' thereof; f

y Fig.,7 is .avviewin side elevation ofthe side 1 bar supportillustrated lin. Fig. .6 in applied position, the concrete'not beingshown;l

ig..8 is a vertical section similar to FigQ of a-slightlydifferenttypeof side `bar` supy portand v Fig.l 9 isap'lanview of, the side barsupport illustrated.. iii-Fig. f8; and showingfthe same in appliedposition u in*l `full ivlines, .fa

`.in the'positi'on that tit will assume whiledoe#`Y ing( removedindotted lines.

,Y rReferring tothe drawings, a standardcon- V,although the bar supportsofthe presentinvention.l and the processes offthe invention employed,may be utilizedrin `building roads of practically any desiredtype, thestandard Iowa section serves as a good example to show i the manner., inwhich the present `increte road sectionmade according .to the. Y ,Stateof Iowa 'specifications is illustrated, and

: concrete.

wardly a short distance from the lower end thereof and similar to theshoulders 15a, and also has a pointed reduced portion 19h adapted to bedriven into the ground and corresponding to the pointed reduced por,-tion 15b of the support 15. One or -more notches 190 are formed in thesupport 19 at one side thereof and these notches, like the notches 150,vhave co-operatingV outwardly and slightly upwardly projecting fingers19d corresponding to the fingers 15bl and formV ing ledges open aboveand outwardly'from the support 19 to receive the side bars 17. It shouldbe here noted that both Vthe supports 15 and the supports 19 arebulgedoutwardly Vat the side opposite the notches and respectively, inorder that the said'V supports will notbeweakened by the formation ofthe said notches.

In utilizing the supports of the present invention in road paving, dowelbars 14 and the central reenforcing bars 16 for a'section to be paved,will be supported by the supports 15 in the desired position above the 1subgrade 10, andthe' side bars 17 will be supported in the desiredposition above the l subgrade 10 by means of either the supports 18 or19. Plastic concrete 2O may be dumped on to the subgrade 10 in pilesbetween the outer ends of the dowely bars 14 and thel side reenforcingbars 17. The concrete will run against the supports 18 orr19 in ageneral outwardly direction and it is for this reason that the portions180, 18d and 18e of the sup- Vport 18 are'provided, and it is also Vforthis reason that the arm 19e of the support 19 is provided. As theouterend portion 18b`and the portions 18o and 18d of the support 18 will bearagainst the side mold form l1, the

upper portion ofthe support will have aV bearing against the side moldform 11 to resist the outward movement of the con crete as it is pouredand thus prevent fthe support 18 from being carriedvaway by theSimilarly as the Varm 19e lof the support 19 bears against the side moldform 11, the side mold form 11 will brace the sup-V port 19 to resistthe outward movement ofthe concrete 20, and will thus prevent thesupport 19 from being carried away bythe moving concrete.V The'plasticconcrete 20 will be poured on to the subgrade V10 until the desiredthickness of the concrete for the Vroadway is obtained.` As thisconcrete usually consists of large quantities of broken stone. theconcrete `will work beneath the dowel bars 14. central reenforcing bars16 and outer reenforci ng bars 17. When the desired thickness ofconcrete has been poured and before the top surface of the concrete hasbeen finished off by a finishing machine, the supports 15 and 18 or 19will be removed. To remove t-he supports 15, the upper ends of thesupports need merely be grasped'and n the supports turned as from thefull line position ungemein rig. 5, e0 'the croataVl 1in@ positionillustrated 'in Figg 5, ,whereupon the l` i lsupportsmi'ay berais -3d,kupwardly andL voutwardlyfrom thesubgradejlO and theconv :crete 20w :Asthefsupportsl 15 are initially turned, lthefingers 15d' `will cam'thedowel ,bars slightly upwardly ,-in.Y the concrete to allow the fingers;15d tol pass 'to'V one sideof grasping handles 18e and turning the `barsthe dowel jbars,` thus 'disengaging supportsA -15 v .completely fromthedowelfbars..V If' the side `supports 18 ,`areused, they canbe readilydisengagedfrom the side bars 17 bymerely jdesired,thesupport s 18 canVbe raisedslightengage v the l same from the bars -17.\wl`1erel ports 19are'used, they will be disengaged from'the bars 17in a ,manner similartothe manner' of disengagement of the supportsfl jfronrV the? dowel bars:14. The upper l ends ly andturned` about ajverticalvaxis to" dis` :uponthe fingers 18fwill c`amf`the.bars-1 7- upwardlyslightly until thefingersaredisposed' at one side of the bars. If the supof the' supports19 will be grasp-ed andthe supports will be swung from the full-line Y`position shown in Fig.- 9`, to the-dotted line position;ysl1ownin Fig.9, whereuponthe supports may be withdrawn fromfthe.sub 7 agrade.l 10 andtheconcrete' 2Q; The` fingers wardly slightlyto permit thefingers topass toone sideof the bars. After the supports ghave ybeen. completely-'r en1ove the concrete Y2Owill hold various bars14, 16 `andf17tinposition above; the ls ubgrade` 10, so; that the .said bars will Vbefirmly einbeddedjin, the

concrete, to brace. and strengthenthesame.

19d duringthe'ini-tial turning movement of thesupports- 19, willcamthebars Q17 .up- I i.

.The Vbroken rock used inthe 'concretewill i prevent the'barsfromsinking Kuntilthecon-f Acrete isset. j Inworking onga pavingjob,only a few of-the supports `lt'rand 18 or, 19 are required `forconstructing anvindefinite length of `the l K pavement.

fore', eliminated by use-of the present suphand a large quantity ot-barsupports;`

As fthesupports y,15 and,` 18 "or 419; are :removed from the reenforcingbars t and concrete, they will 'be thrown ahead lof theV section -underconstruction to Vag-point 'where the; next section of pavingris; toLloe`- f constructedf where they'` will lbe readily( acf Vcessible. "forfurther,` -.use.,i Thel expensegof -supply-ingfa largefnumber of barlsupportfl25 pins foreach sectionr ofp'avementjis: there- -ports anditwill be unnecessary to have on The supports and processes off'paving1,39

file" Construction, are easyjto handle and be-iisdjwithouorequiring-"any more vl'allioi then-has heretofore been reqilireiv inusing other'types' fofbe-r Supports; i

j I tlWill.;y of Conroe; be" yunderstood tht l 'fifaifiesf 'clieiiges--may be midef'in'the form, i

"d'eiiis, riangmeni and: proportions of the :bei SiippQrtsfand-thatchanges may be'made" fin the "prooe'sselof pavinggfasaboye de-Scribi'without departing from 'the gaap@ of*` i the presen-f; invention,

' Vilhatfieclaimed is';`

ring rlortion of thev Snpport-,` yseid finger nioyern't of the supportYWithout'Substanytillly lowering the Sanne, the curved portion 'ofsaidlinger acting s" a Cain Vonsthe'reen- Vforcing"'bar to raise the saineSlightly and thereby perinit the finger to be carried lto one 'yeidefnie bei.

vA removable bers'upportf "forV `usei con- 'ferlete'froa'tl pavingend'theflike, comprising e fsiibstantielly fyertiealmember fhen'ringk*its "lo'iver endYd'pt'erlftoy rest on the ground, 'a "gfingerf'rjectinglaterallytherefrni fora 'Short'liStnCe andf'ourving npwardlylightly 7ft'it's'onter end to V'receive ndfholdf e c'- Crete "reenforeing bergenlerinv proje'eting);` lvterllylfrorn oneside Vof said menber, Seidrmbeig bent tofiit'ove'r' and embrace a side Y I'r'iold forni 'atiopposite *sides thereof. y y y'35A"re"niovfable bar'support foruinf'eony y 1 v{Cfiete -road"pming, A'Comprising affyertiea'lmember''having its lower end adapted to rest Y inthe'fgrnnd', a lingerprojecting lateral-ly l from one side of said member anderving upjwrdlyslightlyfatiteouter end to receive e "sind"holclnfeonerete reenforoingbai-,en erin Y Y Aeztendingfr onione-Sideaof Said member andhaving'efportion projecting-laterally'there- ,f from for s'omedistance,Vssiil'arnl hevingfa w 'vx'rertioalportion joining said laterally pro-'j ectingportion and 'adapted to .abut the inlnersile'ofarsi'deinol'clform, said arnihaving Y Y Y horizontal portion joiningsaid vertical i o portion and adapted to extend over'the top of "themold forni'ancl said'arm having'a down- -Wardly-fand.'outwardlyVinclined portion 0in- -ingl SeidlV horizontal portion and'adapte'd tobearv against.V the outerside of theniold form. Injf testimony whereof Ieliix mysignture.

ERNEST VVILBERI.:I-IALLETT.`

figs/'sms l adapte'dfto'rece'iye'and hold a concrete reenforcing 'bei'until plastiov Conerete'ls y y 'beenI poirel thereabot, Said'snpportrbeing ybl'e from' ai reenforcin'g bar by a'tur'ning

